Changes between Version 45 and Version 46 of AddFilterAlgorithm

Timestamp:

Nov 7, 2024, 10:47:20 AM (2 weeks ago)

Author:

lnerger

Comment:

--

AddFilterAlgorithm

@@ -1 @@
-= Adding a Filter Algorithm to PDAF =
+= Adding an Assimilation Method to PDAF =
 
 [[PageOutline(2-3,Contents of this page)]]
 
-This text describes the implementation strategy and internal structure of PDAF valid for version 1.8.0 and later. If you use an earlier version of PDAF, we recommend to update to the most recent version. In this text, we assume that the reader is already familiar with PDAF to the extend that it is known how PDAF is connected to a model as is described in the [ImplementationGuide Implementation Guide].
+PDAF provides an internal interface that makes it easy to add another assimilation method. Here we describe the implementation strategy and internal structure of PDAF valid for version 2.0 and later. In this text, we assume that the reader is already familiar with PDAF to the extend that it is known how PDAF is connected to a model as is described in the [ImplementationGuide Implementation Guide].
 
-The internal structure of PDAF is organized into a generic part providing the infrastructure to perform ensemble forecasts and filter analysis steps. This generic part is independent of the particular filter algorithm and only distinguishes between ensemble based filters (all filters except SEEK) and mode based filters (currently only SEEK). The filter-specific routines are called through an internal interface.
+The internal structure of PDAF is organized into a generic part providing the infrastructure to perform ensemble forecasts and filter analysis steps. This generic part is independent of the particular filter algorithm and only distinguishes between ensemble based filters (all filters except SEEK) and mode based filters (currently only SEEK, which integrates r modes plus one central model state). The specific routines for a DA method are called through an internal interface.
 
-Each filter algorithm consists of 3 mandatory routines plus 2 optional routines. All routines are described below. They are called through the internal interface of PDAF, except for the "put state" routine (`PDAF_put_state_X` where X is the name of the selected filter), which is cirectly called in the model code.
+In PDAF, each DA algorithm consists of 3 mandatory routines plus 2 optional routines. All routines are described below. They are called through the internal interface of PDAF, except for the "PDAF_assimilate" or "PDAF_put_state" routine ('PDAF_assimilate_X' or `PDAF_put_state_X` where X is the name of the selected DA method), which is directly called in the model code.
 
 == PDAF's Internal Interface ==